6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran, 7, 8-dihydro-6-methoxy-8-(2-methoxyphenyl)-6, 7-dimethyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran, 7, 8-dihydro-6-methoxy-8-(3-methoxyphenyl)-6, 7-dimethyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran, 7, 8-dihydro-6-methoxy-8-(4-methoxyphenyl)-6, 7-dimethyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran, 7, 8-dihydro-6-methyl-6-propoxy-8-(3, 4, 5-trimethoxyphenyl)-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran, 8-(2, 3-dimethoxyphenyl)-7, 8-dihydro-6-methoxy-6, 7-dimethyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-6, 7-dimethyl-8-(2, 3, 4-trimethoxyphenyl)-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-6, 7-dimethyl-8-(2, 4, 6-trimethoxyphenyl)-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-6, 7-dimethyl-8-(3, 4, 5-trimethoxyphenyl)-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-6-methyl-8-(2, 4, 6-trimethoxyphenyl)-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-6-methyl-8-(3, 4, 5-trimethoxyphenyl)-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-7-methyl-8-(3, 4, 5-trimethoxyphenyl)-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-8-(2-methoxyphenyl)-6, 7-dimethyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-8-(3-methoxyphenyl)-6-methyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-8-(4-hydroxy-3, 5-dimethoxyphenyl)-6-methyl-

6H-1, 3-dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-8-(4-methoxyphenyl)-6, 7-dimethyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-8-(4-methoxyphenyl)-6-methyl-

6H-1, 3-dioxolo(4, 5-g)(1)benzopyran-6-ol, 7, 8-dihydro-8-(4-methoxyphenyl)-7-methyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 8-(2, 3-dimethoxyphenyl)-7, 8-dihydro-6, 7-dimethyl-

6H-1, 3-Dioxolo(4, 5-g)(1)benzopyran-6-ol, 8-(2, 3-dimethoxyphenyl)-7, 8-dihydro-6-methyl-

6H-1, 3-dioxolo(4, 5-g)(1)benzopyran-6-ol, 8-(2, 4-dimethoxyphenyl)-7, 8-dihydro-6, 7-dimethyl-